PIEZOELECTRIC VIBRATOR AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a piezoelectric vibrator having a piezoelectric substrate which has a sufficiently high Curie point and shows a superior piezoelectric characteristic.

SOLUTION: The piezoelectric vibrator which has the piezoelectric substrate containing a bismuth laminar compound and vibration electrodes formed on both the surfaces of the piezoelectric substrate is characterized by that substantially no degeneration layer is present on the vibration electrode formation surface of the piezoelectric substrate and the degree of alignment of an axis (a) of the bismuth laminar compound is≤12.8% on the vibration electrode formation surface of the piezoelectric substrate.

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